尝试在bash / linux中删除文件符合目标条件的文件中以特定字符串开头的行

I am writing a bash script that will run a couple of times a minute. What I would like it to do is find all files in a specified directory that contain a specified string, and search that list of files and delete any line beginning with a different specific string (in this case it's I am writing a bash script that will run a coup